John Fox is at the NFL scouting combine in Indianapolis, and the Broncos coach talked to the media.

"Every one of these games takes on a completely different personality," Coach John Fox said.

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Just because the Broncos have been one of the NFL's better teams in the past two or three seasons doesn't mean they are exempt from the transient nature of the salary cap era.

There will be changes.

One of them might be at running back where Knowshon Moreno is a free agent. Moreno was terrific last season, becoming the first Broncos' running back to gain more than 1,000 yards rushing and 500 yards receiving.

Ball emerged as Moreno's backup last year, rushing for 559 yards on 4.7 yards per carry.

"Obviously we think very highly of him," Broncos coach John Fox said at his NFL combine news conference Thursday. "I thought he had tremendous growth as a rookie running back in this league. He got better with every week. We look for a big improvement next year and think he's very, very capable."

"I think one thing that has happened is it's become way more public," Fox said. "I'm not pointing fingers ... but kind of (laughing). That's really the difference. Twenty years ago I don't think there was near the coverage there is today.

"Right, wrong or indifferent, I think workplaces are different. You try to create one of respect and understanding because people come from all over the place — I don't care what line of work you're in. So I think it's just become more public — that's really what's happened. We have to be aware of that whether its questions in the draft process to how guys talk to each other — some dos and don'ts. We're just all trying to evolve and get better as organizations and people. I think that's a challenge to all of us."

— On if there remains medical uncertainty of Broncos' starting safety Rahim Moore, who missed the final nine games of the season with a circulation disorder in his lower left leg, and starting defensive end Derek Wolfe, who missed the final eight games after a seizure-like episode.

"Both are completely different," Fox said. "Like any injury or illness, you give medical attention and you work through it. We have a full offseason to do that, and I feel very comfortable with where the two guys are that you just mentioned. It's a process and it takes time, but we have time."

"They were both big production guys in our offense this year," Fox said. "Like the 31 other teams, every one has free agents. We're still very early in the process. I can talk about my two guys, but we can't talk about (other) people at this point because they are under contract with other teams. It's like going shopping without price tags. You need to get price tags before you start buying stuff. That takes time and that's the process we're in."